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Finding the Fourth Proportional to 113,681.88, 156,894.98 and 68,383.44

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Solution

The fourth proportional to 113,681.88, 156,894.98 and 68,383.44 is: 94,377.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,681.88 : 156,894.98 = 68,383.44 : x
  2. Step 2: Convert to fraction form
    113,681.88/156,894.98 = 68,383.44/x
  3. Step 3: Cross multiply
    113,681.88x = 156,894.98 × 68,383.44
  4. Step 4: Simplify right side
    113,681.88x = 10,729,018,109.21
  5. Step 5: Solve for x
    x = 10,729,018,109.21/113,681.88
  6. Step 6: Final answer
    x = 94,377.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.